OrderedProperties.java |
1 /** 2 * Copyright (c) 2000-2009 Liferay, Inc. All rights reserved. 3 * 4 * 5 * 6 * 7 * The contents of this file are subject to the terms of the Liferay Enterprise 8 * Subscription License ("License"). You may not use this file except in 9 * compliance with the License. You can obtain a copy of the License by 10 * contacting Liferay, Inc. See the License for the specific language governing 11 * permissions and limitations under the License, including but not limited to 12 * distribution rights of the Software. 13 * 14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 17 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 18 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 19 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 20 * SOFTWARE. 21 */ 22 23 package com.liferay.portal.kernel.util; 24 25 import java.util.Enumeration; 26 import java.util.Properties; 27 import java.util.Vector; 28 29 /** 30 * <a href="OrderedProperties.java.html"><b><i>View Source</i></b></a> 31 * 32 * @author Brian Wing Shun Chan 33 */ 34 public class OrderedProperties extends Properties { 35 36 public OrderedProperties() { 37 super(); 38 39 _names = new Vector<String>(); 40 } 41 42 public Enumeration<String> propertyNames() { 43 return _names.elements(); 44 } 45 46 public Object put(Object key, Object value) { 47 if (_names.contains(key)) { 48 _names.remove(key); 49 } 50 51 _names.add((String)key); 52 53 return super.put(key, value); 54 } 55 56 public Object remove(Object key) { 57 _names.remove(key); 58 59 return super.remove(key); 60 } 61 62 private Vector<String> _names; 63 64 }